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Mapping of ionization degree based on Subaru/HSC observations and cosmic reionization simulation

Research Project

Project/Area Number 26287034
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Astronomy
Research InstitutionOsaka Sangyo University

Principal Investigator

Inoue Akio  大阪産業大学, デザイン工学部, 准教授 (30411424)

Co-Investigator(Renkei-kenkyūsha) Ouchi Masami  東京大学, 宇宙線研究所, 准教授 (40595716)
Kashikawa Nobunari  国立天文台, TMT推進室, 准教授 (00290883)
Hasegawa Kenji  名古屋大学, 理学研究科, 特任助教 (20536627)
Ishiyama Tomoaki  千葉大学, 統合情報センター, 准教授 (90616426)
Research Collaborator Shimasaku Kazuhiro  東京大学, 理学系研究科, 准教授
Shimizu Ikkoh  大阪大学, 理学研究科, 特任研究員
Mawatari Ken  大阪産業大学, 教養部, 博士研究員
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords宇宙再電離 / 光学赤外線天文学 / 銀河形成 / 銀河進化 / 光赤外線天文学 / 理論天文学 / 銀河間中性水素 / 銀河形成進化
Outline of Final Research Achievements

To understand cosmic reionization, one of the greatest problems in the modern observational cosmology, we have developed a novel method for mapping the ionization degree of the intergalactic hydrogen. The method is based on the observations with the Hyper Suprime-Cam (HSC) at Subaru Telescope and a large-scale numerical simulation of reionization including a theoretical model of Lyman alpha emitters (LAEs). The LAE simulation has been published in a refereed journal. The Subaru/HSC observational part has been extended to a larger framework using 5 custom-made narrowband filters for HSC, a Subaru Intensive Program called CHORUS (Cosmic HydrOgen Reionization Unveiled with Subaru). In parallel, a number of research papers were published as an outcome of this project: Intergalactic hydrogen in/around a redshift ~3 proto-cluster of galaxies, ionization emissivity of galaxies at redshift ~3, spectral modeling of primordial galaxies, and oxygen observations from high redshift galaxies.

Report

(4 results)
  • 2017 Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (23 results)

All 2017 2016 2015

All Journal Article (10 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 10 results,  Open Access: 4 results,  Acknowledgement Compliant: 5 results) Presentation (13 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] The Spectral Evolution of the First Galaxies. III. Simulated James Webb Space Telescope Spectra of Reionization-epoch Galaxies with Lyman-continuum Leakage2017

    • Author(s)
      Zackrisson, E., Binggeli, C., Finlator, K., Gnedin, N. Y., Paardekooper, J.-P., Shimizu, I., Inoue, A. K., Jensen, H., Micheva, G., Khochfar, S., Dalla Vecchia, C.
    • Journal Title

      The Astrophysical Journal

      Volume: 836 Issue: 1 Pages: 78-78

    • DOI

      10.3847/1538-4357/836/1/78

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Searching for candidates of Lyman continuum sources - revisiting the SSA22 field2017

    • Author(s)
      G. Micheva, I. wata, A. K. Inoue, Y. Matsuda, T. Yamada, T. Hayashino
    • Journal Title

      MNRAS

      Volume: 465 Issue: 1 Pages: 316-336

    • DOI

      10.1093/mnras/stw2700

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lyman continuum leaking AGN in the SSA22 field2017

    • Author(s)
      G. Micheva, I. Iwata, A. K. Inoue
    • Journal Title

      MNRAS

      Volume: 465 Issue: 1 Pages: 302-315

    • DOI

      10.1093/mnras/stw1329

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Imaging of diffuse H I absorption structure in the SSA22 protocluster region at z = 3.12017

    • Author(s)
      Ken Mawatari et al.
    • Journal Title

      Manthly Notices of the Royal Astronomical Sosciety

      Volume: 467 Pages: 3951-3962

    • DOI

      10.1093/mnras/stx038

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Detection of an oxygen emission line from a high-redshift galaxy in the reionization epoch2016

    • Author(s)
      Inoue, Akio K.; Tamura, Yoichi; Matsuo, Hiroshi; Mawatari, Ken; Shimizu, Ikkoh; Shibuya, Takatoshi; Ota, Kazuaki; Yoshida, Naoki; Zackrisson, Erik; Kashikawa, Nobunari; Kohno, Kotaro; Umehata, Hideki; Hatsukade, Bunyo; Iye, Masanori; Matsuda, Yuichi; Okamoto, Takashi; Yamaguchi, Yuki
    • Journal Title

      Science

      Volume: 325 Issue: 6293 Pages: 1559-1562

    • DOI

      10.1126/science.aaf0714

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Nebular line emission from z > 7 galaxies in a cosmological simulation: rest-frame UV to optical lines2016

    • Author(s)
      Shimizu, Ikkoh; Inoue, Akio K.; Okamoto, Takashi; Yoshida, Naoki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 461 Issue: 4 Pages: 3563-3575

    • DOI

      10.1093/mnras/stw1423

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] A Hard Ionizing Spectrum in z = 3-4 Lyα Emitters with Intense [O III] Emission: Analogs of Galaxies in the Reionization Era?2016

    • Author(s)
      K. Nakajima, R. S. Ellis, I. Iwata, A. K. Inoue, H. Kusakabe, M. Ouchi, B. E. Robertson
    • Journal Title

      The Astrophysics J. Letters

      Volume: 831 Issue: 1 Pages: L9-L9

    • DOI

      10.3847/2041-8205/831/1/l9

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Discovery of a Damped Lyα Absorber at z = 3.3 along a Galaxy Sight-line in the SSA22 Field2016

    • Author(s)
      Mawatari, K., Inoue, A.K., Kousai, K., Hayashino, T., Cooke, R., Prochaska, J.X., Yamada, T., Matsuda, Y.
    • Journal Title

      The Astrophysical Journal

      Volume: 817 Issue: 2 Pages: 161-166

    • DOI

      10.3847/0004-637x/817/2/161

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Peering through the holes: the far-UV color of star-forming galaxies at z ~ 3-4 and the escaping fraction of ionizing radiation2015

    • Author(s)
      Vanzella, E., et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 576 Pages: A116-A116

    • DOI

      10.1051/0004-6361/201525651

    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Primordial star clusters at extreme magnification2015

    • Author(s)
      Zackrisson, E., et al.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 449 Issue: 3 Pages: 3057-3063

    • DOI

      10.1093/mnras/stv492

    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 宇宙再電離期のライマンα輝線銀河シミュレーションとすばるHyper SuprimeCam 探査結果の比較2017

    • Author(s)
      井上昭雄、長谷川賢二、石山智明、矢島秀伸、清水一紘、梅村雅之、今野彰、播金優一、澁谷隆俊、大内正己
    • Organizer
      日本天文学会2017年春季年会
    • Place of Presentation
      九州大学
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] 輻射性フィードバックを考慮した大規模再電離シミュレーションとその応用例2017

    • Author(s)
      長谷川賢二、石山智明、矢島秀伸、井上昭雄
    • Organizer
      日本天文学会2017年春季年会
    • Place of Presentation
      九州大学
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] SSA22 原始銀河団領域における広範囲に渡る中性水素ガス密度超過2016

    • Author(s)
      馬渡健、井上昭雄、山田亨、他
    • Organizer
      日本天文学会2016年秋季年会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2016-09-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] Discovery of a Damped Lyα absorber at z =3.3 along a galaxy sight-line in the SSA22 field2016

    • Author(s)
      Mawatari K., Inoue A. K., et al.
    • Organizer
      46th Saas Fee Course
    • Place of Presentation
      Saas Fee City Hall
    • Year and Date
      2016-03-13
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Discovery of a Damped Lyα absorber at z =3.3 along a galaxy sight-line in the SSA22 field2016

    • Author(s)
      Mawatari K., Inoue A. K., et al.
    • Organizer
      Subaru User's Meeting
    • Place of Presentation
      KKR Hotel Atami
    • Year and Date
      2016-01-19
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 銀河視線で発見されたz=3.3 DLAの性質2015

    • Author(s)
      馬渡健、井上昭雄、他
    • Organizer
      初代星・初代銀河研究会
    • Place of Presentation
      草津セミナーハウス
    • Year and Date
      2015-12-01
    • Related Report
      2015 Annual Research Report
  • [Presentation] Lyman Break銀河スペクトル中に発見された赤方偏移3.3のDamped Lyα system2015

    • Author(s)
      馬渡健、井上昭雄、他
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      甲南大学
    • Year and Date
      2015-09-09
    • Related Report
      2015 Annual Research Report
  • [Presentation] 輻射性フィードバックを考慮した再電離シミュレーション2015

    • Author(s)
      長谷川賢二、石山智明、井上昭雄、他
    • Organizer
      CfCAユーザースミーティング
    • Place of Presentation
      水沢VERA観測所
    • Year and Date
      2015-09-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] 宇宙再再電離期における紫外線フィードバックの銀河・銀河間物質への影響2015

    • Author(s)
      長谷川賢二、石山智明、井上昭雄、他
    • Organizer
      第二回銀河進化研究会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2015-06-03
    • Related Report
      2015 Annual Research Report
  • [Presentation] 大規模再電離シミュレーションの為のサブグリッドモデルの開発2015

    • Author(s)
      長谷川賢二
    • Organizer
      日本天文学会2015年春季年会
    • Place of Presentation
      大阪大学
    • Year and Date
      2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 輻射流体的フィードバックを考慮した新しい再電離シミュレーション2015

    • Author(s)
      長谷川賢二、井上昭雄、石山智明
    • Organizer
      SKA-Japan ワークショップ2015
    • Place of Presentation
      国立天文台三鷹
    • Year and Date
      2015-03-03 – 2015-03-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] 再電離シミュレーションコードの開発とそれを用いた再電離期における21cm 線分布の計算2015

    • Author(s)
      長谷川賢二、井上昭雄、石山智明
    • Organizer
      初代星・初代銀河研究会
    • Place of Presentation
      東北大学
    • Year and Date
      2015-01-19 – 2015-01-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 遠方銀河に関するHST, Subaru, ALMAの最近の成果と将来展望2015

    • Author(s)
      井上昭雄
    • Organizer
      初代星・初代銀河研究会
    • Place of Presentation
      東北大学
    • Year and Date
      2015-01-19 – 2015-01-21
    • Related Report
      2014 Annual Research Report
    • Invited

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Published: 2014-04-04   Modified: 2019-03-29  

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